#42377F#42377F

#42377F is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.9% C 0.117 H 286.6°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#42377F
RGB	rgb(66, 55, 127)
HSL	hsl(249, 40%, 36%)
HSV	hsv(249, 57%, 50%)
CMYK	cmyk(48%, 56.7%, 0%, 50.2%)
CIE-LAB	lab(27.91, 24.66, -39.35)
CIE-LCH	lch(27.91, 46.44, 302.07°)
OKLab	oklab(38.86% 0.0335 -0.1122)
OKLCH	oklch(38.86% 0.117 286.6)
XYZ	xyz(7.4426, 5.4226, 20.7291)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42377F #747F37

analogous

#37507F #42377F #66377F

triadic

#42377F #7F4237 #377F42

tetradic

#42377F #7F3750 #747F37 #377F66

square

#42377F #7F3750 #747F37 #377F66

split-complementary

#42377F #7F6637 #507F37

monochromatic

#16122A #2C2554 #42377F #5849AA #7C70C1

Accessibility & contrast

On white

10.07

#42377F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#42377F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42377F

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42377F	#FFFFFF	#000000	##FFFFFF
##42377F	1.00	10.07	2.08	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104481

Deuteranopia (green-blind)

#0E407D

Tritanopia (blue-blind)

#2E4755

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #42377f;
/* rgb */ color: rgb(66, 55, 127);
/* oklch */ color: oklch(38.9% 0.117 286.6);

Tailwind

colors: {
  custom: {
    50: '#7b6ea5',
    500: '#42377f',
    950: '#000000',
  },
}

SCSS

$custom: #42377f;
$custom-light: #7b6ea5;
$custom-dark: #000000;

JSON

{
  "hex": "#42377f",
  "rgb": {
    "r": 66,
    "g": 55,
    "b": 127
  },
  "hsl": {
    "h": 249.167,
    "s": 39.56,
    "l": 35.686
  },
  "oklch": {
    "l": 0.3886,
    "c": 0.11706,
    "h": 286.6
  },
  "luminance": 0.05423
}

Semantic roles & 50–950 ramp

primary

#42377F

secondary

#A0AA68

accent

#CF58BD

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A070F

muted

#7C7A7F

Preview Lab

Preview with #42377F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →